Tie puller



- time; Masha Application Ju ne 8, 1942, se iaiNo. 44c,s1c

4 Claims. -(l. 254 181.

This invention relatesto a tie puller for pulling form ties or tie rodsfrom concrete after the concrete has set.

In the so-called architectural type of concrete work tie rods of smalldiameter are utilized and are pulled out after the concrete has set,thus leaving relatively small holes to be patched 0r. filled in. Theconcrete having set tightly grips the tie and considerable efiiort andforce are required to loosen and withdraw the tie rod.

This invention has for its salient object to provide a concrete tiepuller that is simple in construction, efiective in operation and can beeconomically manufactured;

Another object of the invention is to provide a device of the. characterdescribed that can be used to loosen as well as to pull .tie rods.

Further objects of the invention will appear Patented Sept. 7, 1943 rfrom the following specification taken in connection with the drawingwhich forms a part of this ing the tie puller;

Fig. 3 is a transverse sectional elevation taken substantially on line3-3 of Fig. 2; and

Fig. 4 is an elevational view showing the tie puller in operationpulling the tie.

In the particular embodiment of the invention shown there areillustrated form boards l0 and H which'are held in place by a tie rodl2, it being understood that a plurality of tie rods is used.

The tie rods may be of any desired construction and as shown each tierod'h-as a pair of heads at each end, the heads being indicated at I 3and M. The rods extend through openings [3 and Win the form boards [0and H and between spaced vertical beams or studs Hand l8 and spacedhorizontal beams or walers I9 and 20.

The ties are held in position by'spreaders or clips 25 which are securedover the rods adjacent the collars l3 and by wedges 26 which are drivenover the outer end portions of the rods adjacent the outer heads orcollars [4. The constructions Samar, QfTntPUL-nnit I 1 v o Selle N. J1,assignon byg M v es i mlsnie to Re1 h-E:- dg .;=N w,.

The invention claimed in this application con sists'of means forloosening and pulling form ties after the tie holding means have beenremoved and the concrete has set. This means consists of a pullingmember comprising an elongated rod or shank 33 having secured to one enda foot or shoe 3| consisting of a bar secured to and extendingtransversely of the end of the rod or shank 30. This bar has preferablyformed thereon a pair of barbs or spikes 32,

The rod 30 has slidably mounted thereon a head 33 which fits loosely onthe rod or shank of the sheathing on the left side of Fig. 4 and thepuller is shown engaging the outer head M on the right hand side of thefigure. .The slidhead away from the foot bar until the tie is fullyloosened in the concrete.

The sliding head is y then moved back into contact with the foot barand. the withdrawal completed by the jarring action of the handle 36.This jarring action may be used in unison with the lever action in theposition shown in Fig. 4 to start the tie.

It will be evident that the head 33 can be moved successively outwardlyon the rod 30 and of the clips 25 is not material to the present in-Furthermore, it should be understood that the particular construction ofform tie and of the holding means therefor has nothing to do with thepresent invention.

:when the rod is moved in a direction to cause the and 2!] and preventthe tool from slipping,

Although one specific embodiment of the invention has been particularlyshown and described, it should be understood that the invention iscapable of modification and that changes in the construction and in thearrangement of the cooperating parts may be made without departing fromthe spirit or scope of the invention as expressed in the followingclaims.

I claim:

1. A tie rod loosener and'puller comprising a shank, a shoe on one endof the shank, a head slidably and tiltablymounted on the shank andhaving 1a =--c1aw:1 extending transversely; of. the shank, a handleslidablymounted 0nthe shank 10' and a head on the other end of theshank. h

2. A tie rod puller comprising a shank, a shoe on one end thereof, and ahead sli-dably mounted on the shank and having a loose fit thereonwhereby a limited tilting movement oitiienead it is permitted to lockthe headin--position onsaid head having a fork at one end there- Jthetierod-p on one end thereof, a head slidably mounted on mitted to lock thehead in position on said shank,

said head having a. fork at one end thereof, an

abutment on the shank and a handle slidably mounted on the shank betweenthe head and the abutment. v

l; A gtieWBd' puller cojn'pigisirie ;ashank, a shoe on one-end thereof,and*a-hea;d;having"an opening therethrough and slidably mounted on theshank and having a loose fit thereon whereby a limited tilting movementof the head is permi ted, said head having means thereon for enridpulii-nga tie rod, said head Opening hav g edgs ad ied to bite into theshank and hold theh'e'ad a's'the shank is operated to pull JAMES C.

